Fe, C 0.85 (wt%), hypereutectoid alloy

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Description:	This is a hypereutectoid alloy and illustrates the effect of slow cooling rate on the resultant microstructure. The first phase to form from the melt is proeutectoid cementite. With slow cooling, furnace cooled, allotriomorph cementite forms on the prior austenite grain boundaries, rejecting iron into the melt. At the eutectoid composition the remaining austenite transforms to pearlite.
Keywords:	allotriomorph • alloy • carbon • cementite • hypereutectoid • iron • metal • steel
Categories:	Science approaches > Microstructure Materials > Metals & alloys > Carbon steels Testing, analysis & experimentation > Metallography Scale > Micro
Created by:	DoITPoMS, University of Cambridge Prof T W Clyne, Department of Materials Science and Metallurgy, University of Cambridge
Published by:	DoITPoMS, University of Cambridge
License:	This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales). You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). noncommercial – You may not use this work for commercial purposes. share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. View the full legal code here.
Date created:	25 October 2001
Date added:	21 August 2009
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Resource ID:	1089
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